<template>
  <div class="swiper mySwiper" ref="cur">
    <div class="swiper-wrapper">
      <div class="swiper-slide" v-for="(slide,index) in skuImageList" :key="slide.id">
        <img :class="{active:currentIndex===index}" :src="slide.imgUrl" @click="changeCurrentIndex(index)">
      </div>
    </div>
    <!-- 如果需要导航按钮 -->
    <div class="swiper-button-next"></div>
    <div class="swiper-button-prev"></div>
    <!-- 如果需要分页器 -->
    <div class="swiper-pagination"></div>
  </div>
</template>

<script>
  export default {
    name: "ImageList",
    props:['skuImageList'],
    data(){
      return{
        currentIndex:0
      }
    },
    computed:{
      imgObj(){
        return this.skuImageList
      }
    },
    watch:{
      skuImageList:{
        immediate:true, // 页面一上来就先监听一次
        handler(){
          this.$nextTick(() => {
            new Swiper (this.$refs.cur, {
              slidesPerView : 3,  // 一次展示 3 个
              // loop:true, 
              // 如果需要前进后退按钮
              navigation: {
                nextEl: ".swiper-button-next",
                prevEl: ".swiper-button-prev",
              }, 
            })    
          });
        }
      }
    },
    methods:{
      // 点击图片添加 边框 事件
      changeCurrentIndex(index){
        this.currentIndex = index
        this.$bus.$emit("changeCurrentIndex",this.currentIndex)
      }
    }
  }
</script>

<style lang="less" scoped>
  .swiper {
    height: 56px;
    width: 412px;
    box-sizing: border-box;
    padding: 0 12px;
    .active {
      border: 2px solid #f60 !important;
      padding: 1px !important;
    }
    .swiper-slide {
      width: 56px;
      height: 56px;

      img {
        width: 100%;
        height: 100%;
        border: 1px solid #ccc;
        padding: 2px;
        width: 50px;
        height: 50px;
        display: block;

        // &:hover {
        //   border: 2px solid #f60;
        //   padding: 1px;
        // }
      }
    }

    .swiper-button-next {
      left: auto;
      right: 0;
    }

    .swiper-button-prev {
      left: 0;
      right: auto;
    }

    .swiper-button-next,
    .swiper-button-prev {
      box-sizing: border-box;
      width: 12px;
      height: 56px;
      background: rgb(235, 235, 235);
      border: 1px solid rgb(204, 204, 204);
      top: 0;
      margin-top: 0;
      &::after {
        font-size: 12px;
      }
    }
  }
</style>